Management:
Treat the cause of Bradycardia.
TPM in Symptomatic bradycardia, if there is reversible causes.
PPM in Symptomatic bradycardia, if there is irreversible causes.
Acute Symptomatic bradycardia can respond to the (Atropine 0.6 mg).

(Tachycardia):Definition:
The heart rate more than 100 beats per minute or more, is known as Tachycardia.